rubygems/rubygems v3.3.17

on GitHub

Enhancements:

• Document gem env argument aliases and add gem env user_gemhome and
  gem env user_gemdir. Pull request #5644 by deivid-rodriguez
• Improve error message when operating_system.rb fails to load. Pull
  request #5658 by deivid-rodriguez
• Clean up temporary directory after generate_index --update. Pull
  request #5653 by graywolf-at-work
• Simplify extension builder. Pull request #5626 by deivid-rodriguez
• Installs bundler 2.3.17 as a default gem.

Documentation:

• Modify RubyGems issue template to be like the one for Bundler. Pull
  request #5643 by deivid-rodriguez